Mercury Optimax 250 Manual page 48

DIRECT FUEL INJECTION
TRACKER VALVE REMOVAL
1. Remove 4 screws securing tracker valve and remove tracker assembly.
2. Inspect tracker diaphragm for cuts and tears.
3. Inspect tracker cover o-ring for cuts and abraisions. Replace components as re-
quired.
a -
b -
c -
d -
TRACKER VALVE INSTALLATION
NOTE: Apply a light coat of 2-4-C with Teflon to tracker diaphragm and cover o-ring to
aid in their retention on fuel rail while reinstalling tracker valve to fuel rail.
NOTE: Apply anti-seize grease (obtain locally) or 2-4-C with Teflon to tracker valve at-
taching screw threads.
1. Position diaphragm, spring and o-ring onto fuel rail.
2. Place cover over diaphragm/spring/o-ring assembly and secure with 4 screws.
Torque screws to 70 lb. in. (8.0 Nm).
a
a
a -
b -
c -
d -
e -
Page 3B-48
a
a
57802
Screws
Diaphragm
Spring
O-Ring
b
b
c
57919
Diaphragm
Spring
O-Ring
Cover
Screws [Torque to 70 lb. in. (8.0 Nm)]
b
c
d
e
d
58009
e
b
57802
90-888438 JUNE 2002